The work that began with EarPods continues to pay off as Apple prepares to ship the noise-canceling AirPods 4.

For the first time ever, the entry-level AirPods have active noise cancellation (ANC). Apple unveiled the new AirPods 4 on Sept. 9 at the "Glowtime" event where the Cupertino-based tech giant debuted the new line with two variants: one with ANC and one without ANC.

To a publication, Apple executives explained the magic behind AirPods 4 ANC feature that works without ear tips.

In a recent interview with Engadget, Apple's vice president of hardware engineering Kate Bergeron and AirPods marketing director Eric

Before it got into your hands, it’s highly likely that engineers were hard at work, pulling their hair out and yelling obscenities, fixing hardware challenges that drove them up a wall. But there’s always a “Eureka!